Preparation of Monodispersed Acicular α-Fe2O3

Chinese Journal of Applied Chemistry ›› 1996, Vol. 0 ›› Issue (1): 86-88.

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Preparation of Monodispersed Acicular α-Fe₂O₃

Wei Yu¹, Zheng Xuezhong¹, Liu Xiaolin¹, Shao Shuxia², Lu Ping²

1. Department of Chemistry, Hebei Normal University, Shijiazhuang 050016;
2. Center of Analysis & Measurement, Hebei Normal University, Shijiazhuang

Received:1995-05-25 Revised:1995-07-28 Published:1996-02-10 Online:1996-02-10

Abstract

Abstract: Uniform acicular hematite used as starting material for magnetic recording were prepared by hydrothermal reaction from condensed ferric hydroxide gel.The simplified procedure under general experimental conditions was used.In the presence of organic chelating agent(HEDP) acicular particles were observed.However,with concentration of HEDP increasing from 1×10^-3 mol/L to 1×10^-2 mol/L,uniform cubic α-Fe₂O₃ was obtained.The experimental results show that the volume of the particles is dependent on the number of nuclei produced in the precipitation stage of Fe(OH)₃.

Key words: α-Fe₂O₃, Fe(OH)₃, acicular particlese

Wei Yu, Zheng Xuezhong, Liu Xiaolin, Shao Shuxia, Lu Ping. Preparation of Monodispersed Acicular α-Fe₂O₃[J]. Chinese Journal of Applied Chemistry, 1996, 0(1): 86-88.

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Preparation of Monodispersed Acicular α-Fe₂O₃

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